<template lang="">
  <div>
     <el-container>
      <el-aside width="200px">
        <el-menu
        active-text-color="#ffd04b"
        background-color="#545c64"
        class="el-menu-vertical-demo"
        default-active="2"
        text-color="#fff"
        @open="handleOpen"
        @close="handleClose"
      >
        <el-sub-menu index="1">
          <template #title>
            <el-icon><location /></el-icon>
            <span>Navigator One</span>
          </template>
          <el-sub-menu index="1-4">
            <template #title>item four</template>
            <el-menu-item index="1-4-1">item one</el-menu-item>
          </el-sub-menu>
        </el-sub-menu>
        <el-menu-item index="2">
          <el-icon><icon-menu /></el-icon>
          <span>Navigator Two</span>
        </el-menu-item>
        <el-menu-item index="3">
          <el-icon><document /></el-icon>
          <span>Navigator Three</span>
        </el-menu-item>
        <el-menu-item index="4">
          <el-icon><setting /></el-icon>
          <span>Navigator Four</span>
        </el-menu-item>
      </el-menu>

      </el-aside>
      <el-container>
        <el-header>我是头部</el-header>
        <el-main>
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>
<script setup>
const handleOpen = (key,keyPath) => {
  console.log(key,keyPath);
};
const handleClose = (key,keyPath) => {
  console.log(key, keyPath);
};
</script>
<style>
#app,
body {
  padding: 0;
  margin: 0;
  margin-top: 0;
  min-height: 0;
}
.el-menu-vertical-demo{
  height: 100vh;
}
</style>